Which exterior insulation is best to create at thermal break in an bungalow in Alberta?

Rebekah Barnes
Updated: Sept. 4, 2020

Do you have any advice with spray cork renders vs. fully insulating the outside of our home with rockwool or foam board and new siding. We need a cost effective solution to create a thermal and air barrier on our 1970s raised bungalow.

We have a fully insulated (with spray foam) basement up to the rim joists. This space is now wonderful to live in.   

However, at -40, we experience frost and freezing temperatures on the main floor in the corners of the house. We plan to replace the single pane wood frame windows when updating the outside of our home. Located in northern Alberta. 

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